Valve.



N. B. GREIGHTON & S. BLOCK.

' VALVE.

1 llinmlll 15 0 Illmn J5 E a P1 WIT/VE88E8 INVENTOR ATTORNEKS .UNITED STATES PATENT OFFICE.-

NELSQN B. CREIGHTQN AND SAMUEL BLOCK, OF NEW YORK, N. Y.

. VALVE.

Application filed July 26, 1911. Serial No. 640,622,

Specification of Letters Batent.

Patented June 4, 1912.

county of Kings and State of New York,

have invented a new and Improved Valve, of which the following is a full, clear, and exact description.

The invention relates to valves, such as shown and described in the application for Letters Patent of the, United States, N o.

(305,219, filed by us on January 28, 1911.

The object of the present invention is to provide a new and improved valve arranged to normally hold the valve diskin an open position for the passage of gas, liquid or other fluid,-to cause the valve to close automatically in case of fire and to allow closing of the valve from a distant point.

For the purpose mentioned, use is made of a lever connected by fusible solder with a member fixed on the actuating means for the valve disk, so that the lever and member remain connected with each other under ordinary temperature, but separate under a higher temperature to allow the valve disk to close automatically.

A practical embodiment of the invention is represented in the accompanying draw ings forming a part of this specification, in which similar characters of reference indi- 'cate corresponding parts in all the views.

Figure 1 is a side elevation of the valve; Fig. 2 1s a sectional side elevation of the 7 same; Fig. 3 is a transverse sect-ion of the same; Fig. 4-is a perspective view'of the abutment link; and Fig. 5 is a perspective view of the lever.

The valve body A of the. valve is provided with an inlet B and an outlet C connected with the pipes D and E, respectively, and intermediate the said inlet B and the said outlet C is arranged a valve seat F, on which is adapted to be seated a valve disk G having a stem G, the lower end of which is mounted to slide in a cap H screwing on the bottom of the valve bod A. A spring I is coiled on the lower portion of the valve stein G and rests with one end on the cap H while the other end presses against the under side of the valve disk (l to move the latter onto the soul'- I whenever the valve disk is released, as hereinafter more fully explained.

The upper end of the valve stem G extends into a chamber J formed on the valve body A, and into the said chamber extends a rock shaft K provided with a tooth K adapted to engage the upper end of the valve stem G, to swing the latter downward and likewise the vertical disk G, to hold the latter normally off its seat, as plainly indicated in Fig. 2.

One end of the chamber J is closed by a screw plug L and the other end is closed by a screw plug N, adapted to be interchanged with the plug L so as to permit the use of the plugs L and N on either end of the chamber J. The screw plugs L and N are provided with bearings for the rock shaft K to turn in, and the said rock shaft is provided with a conical collanK engaging a corresponding seat on the plug N, and the v reduced end K of the rock shaft K is pressed on by a spring K" held in the screw plug L, the spring K serving to firmly seat the collar K on its seat in the plug N to prevent leakage of gas or other fluid passing through the valve.

The outer end K of the rock shaft K is made polygonal for the reception of 'thecorrespondingly-shaped bore of a hub or a like member Oturning with the rock shaft K,

and on the said member 0 is secured the fulcrum end of a lever P by the use of solder Q, fusible at a low temperature so that when the valve is heated, say by a fire that breaks out in the building or from any other cause, the solder Q melts and the lever P becomes detached from the member O to allow the valve-disk G to move to its seat F by the action of its spring I to automatically close the valve. The lever P is provided at its free end with a fork P engaged by the outerend R of an abutment link R having anelongated open ng R engaging a stud S on the body A, it being understood that two of said studs are provided, one on each side of the body, to permit the use of the abutment link R and the lever P on either side of-the valve when interchanging the plugs *IJ' 'E and N, as previously mentioned. The

of its spring I until the lever P is disconnected from the member 0, as above described, and at which time the valve disk G is released and moved to its seat by the ac-' tion of the spring I. The fork P is preferably provided with cut-out portions P for engagement. by the lugs B so as to prevent an accidental disengagement between the free end of the abutment link R and the fork P of the lever P.

The free end of the lever P is connected with one end of a rod T leading to a distant point, so as to permit of imparting a swinging motion to the lever P for turning the rock shaft-K sufficiently for the tooth K to pass the stem G and thus allow the valve disk G to move to its seat by the actionof the spring I.

It is understood that when the several parts are in the position shown in Figs. 1, 2 and 3, the spring I is compressed and the valve disk (lis held open' by the action of the tooth K on the rock shaft K locked in place by the lever P abutting against the abutment link R. Now when the lever P is disconnected from the member 0 by the solder Q melting then the spring I forces the valve disk G to its seat F to close the valve, and a like result is obtained on the operator exerting a pull on the rod T to.-

move the tooth K past the end of'the stem G as before mentioned.

From the foregoing it will be seen that the valve disk G is normally held open against the tension of its spring I, and when released the valve disk is moved to itsseat F by the action of the spring I.

Having thus described our invention, we claim as new and Patent! 1. A valve comprising a valve body having an inlet, an outlet, and a valve seat intermediate the said inlet and outlet, a spring pressed valve adapted to be seated'on the said valve seat, actuating means for en aging the said valve to move the same 0 its seat, said means being adapted to release .lugs near its free end desire to'secure by Letters said. valve upon disengaging movement in opposite directions. a lever having a fulcrum formed by a part of said actuating means, fusible solder rigidly connecting the said lever with its fulcrum, and means to prevent movement of said lever in one direction against the force of said spring whereby to normally hold the valve off its seat.

2. A valve, comprising a valve body having an inlet, an outlet, and a valve seat intermediate the said inlet and the said outlet, a spring-pressed valve adapted to be seated on the said valve seat, actuating means for engaging the said valve to move the same off its seat, a lever, a member fixed on the said actuating means, fusible solder connecting the fulcrum end 'of'the said lever with the said fixed member, and an abutment linkfulcrumed on the said valve body and detachably engaging the free end of the said lever whereby the valve is normally held off its seat. v I

3. A valve, comprising a valve body having an inlet, an outlet and a valve seat intermediate the said inlet and the said out- I let, a' spring-pressed valve adapted to be seated on the said valve seat, actuating means for engaging the said valve to move the same off its seat, a lever, a member fixed on the said actuating means, fusible solder connecting thefulcrum end of the said lever with the said fixed member, and an abutment link fulcrumed on the said valve body and d'etachably engaging the free end of the said lever whereby the valve is normally held off its seat, the said lever having a forked end and the abutment link having for engagement with the said fork.

In testimony whereof We have signed our names to this specification in the presence of two subscribing witnesses.

NELSON B. GREIGHTON'.

SAMUEL BLOCK. Witnesses: I I

WM. F. ITTNER, Jon M. Horriwmnm- 

